80050000505 has 24 divisors (see below), whose sum is σ = 99857885400. Its totient is φ = 61600996352.

The previous prime is 80050000487. The next prime is 80050000531. The reversal of 80050000505 is 50500005008.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 15808535824 + 64241464681 = 125732^2 + 253459^2 .

It is not a de Polignac number, because 80050000505 - 2⁶ = 80050000441 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1095761 + ... + 1166529.

It is an arithmetic number, because the mean of its divisors is an integer number (4160745225).

Almost surely, 2^80050000505 is an apocalyptic number.

It is an amenable number.

80050000505 is a deficient number, since it is larger than the sum of its proper divisors (19807884895).

80050000505 is a wasteful number, since it uses less digits than its factorization.

80050000505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71101 (or 71072 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The spelling of 80050000505 in words is "eighty billion, fifty million, five hundred five", and thus it is an aban number.